Impression apparatus.



L HUFFMAN. IMPRESSION APPARATUS. APPLICATION FILED OCT. 4, 1907.

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Patented Jan. 11,1910.

2 SHEETS-SHEET 2.

INVENITOR;

ntions. l rotating; lmpressmg means in such a. mannor that while. during; the time c be made had the normal LOUIS IMPRESSION APPARATUS.

emcee.

Application M October 4, i907.

Specification of Letters Eetent.

HUFFMAN, OF TORONTO, ONTARIO, CANADA.

Patented dam. ieio. Serial No. senses.

To all whom it may concern:

Be it known that 1, Lotus HUFFMAN, of the city of Toronto. in the Province of Ontario, Canada, have invented certain new and useful lmprovements in Impression Apparatus. of which the following is e specification.

lily invention relates to apparatus in which rotary means are employed to produce n series of impressions at regular in tervnls on a. continuous hand of material drawn through the apparatus ata sn'hstem v tially uniform spee Such impressions may, for exampl he printed impressions as in a cylinder printing press, perforations as in a rotary periorator, or may amount to a. complete severing of the material as in machines for dividing a bend of material into sheets. in suchapparatus, taking a cylinder printing press as a concrete e1 4 nmple, it has heretofore only been possible to print impressionsat intervals represented by the circumference of the cylinder, or aliquot parts thereof, and my object is to render it possible to make, at will and with e. given cylinder, impressions at intervals other than said intervals whether such impressions be in themature of printing, or perforating or dividing or any like operattain my object hy carrying the or making; an iinprcszsioin the impressing; means are ino"'x'ig the some speed. the band materiel yet iinniediutcly after an imp sion is made the speed of impressing means may rotation of the be increased to cause the next impression to he made other on interval less than that at which it would speed of the impressing means been maintained. ln practice a plurality of impressing means will be employed each shaped as a cylinder. 7

Figure 1 is front-elevation of my device. Fig. 2 is a side elevation of the some partly in section. Fig. 3 is a section on the line a-a Fig. 1, looking toward the right. Fig. 4c is a similar view looking" toward the left. Fiq. 5 is a section on the line b-b Fig. 1, looking toward the left. In the drawings like characters of reference indicate corresponding parts in ihe different figures.

l is a shaft suitably journsled on the frame 2. shaft ere coneentricslly ()n this segment of s l l x,

l l l l t l i ried by the irsme of the machine.

- thee journeled the segments which are formed as segments of a cylinder and carry the impressing moons. While the impressing means may be of any form 1 show a stereotype plate 4 secured to each segment. (See Fig. :2.) The segments 3 being independent of each other and of the shaft may he rotated as desired at the same speed as the shaft, or at a difierentspeed. Each segment carries a gear wheel 5, and these gear wheels mesh with similar reer wheels 6 s'ecured to. segments 7, which are independently journeled on the shaft 8 suitably corsegments form the impression roller which cooperates with the impressing means when an impression is being made on the paper or other material ted through the device. The gearing insures thatthe some part. of each segment 7 will always cooperate with a given part of one ot the segments lghis is important in printing it is usually necessary to pad certain portions of the impression rollers in order to produce uniform imprints.

It is necessary device to provide variable motion to thcsegnnents 3 e means .i will. '1 of the device. s two segn'icnts in the operation of my means for imparting the horeinhet'ore referred to but before describing ,l'. outthe mode oi'. oper- 3 are shown the imprc no" means will in practice usually sccu to each segment, which impressing ill zrsnmc to he, stereot-y ie plates.

that each segment 3 is cothe corresponding segment 7 the segment in at. substantially. the some speed as thesheft l. which speed will substantially correspond with the speed'et. which the psperis' is through the machine. r s soon, one of the segments 3 has made its impression its speed is accelerated in order to advance it an angular distance greater than that due to the rotation of the shaft. This enables it to make its next impression after a shorter interval than would otherwise be the case, so that impressions are made at less intervals than represented by the circumference of the complete cylinder of which 3 are segments, and at intervals which may be other than aliquot parts of thesaid circumference.

mczi us we During t. per-sting;

These e'c emtion are rotating however; as

gap being left when two ments are in contact.

ends 01 the seg- I other, The length of the as that of the shaft throughout the revoluinterval between impressions may therefore tion.

and their speed will remain the same The limit of adjustment in the other be varied by causing any segment, during direction is obtained when the segments 3 the time it is not in cooperation with one of the segments 7, to close a lesser or greater portion of this gap.

The means I will now describe not only cause .the periodical acceleration of the speed of each segment 3 but also enables the regulation referred to to be effected.

011 the frame is carried a slide 9 work ing in suitable guideways 10. This frame is adjustable up and down by means of the screw 11. which is threaded through the top of the frame and journaled in the slide 9. The slide has an annular way formed therein in which is carried the rotatable ring 19.. This ring carries a pin 13, which pin engages a slide 14, adapted to move transversely of the disk 15 in the guideway 16 formed therein. The disk 15 is secured to the shaft 1, and the slide is suitably slotted to pass on each side of the shaft. The disk isalso slotted parallel to the guideway 16, and through these slots projectthe pins 17 extending out from the slide 14. These pins engage the radial slots 18 formed in the segments 3. o lessen friction the pins are preferably provided with the friction rollers 19. The operation of this mechanism is as follows ;The pin 13 being secured to the ring 12 remains at a constant distance from the center of the ring, and if the ring be eccentric to the shaft the pin, owing to its engagement with the slide 14, will move in a circle eccentric to the shaft, and hence will cause the reciprocation of the slide 14 in its guideway on the disk 15. This reciprocation of the slide causes a reciprocating movement of the pins 17, which engaging the slots 18 cause each segment for part of a rotation to rotate substantially synchronously with the shaft and then to accelerate its movement, the original rate of rotation being subsequently resumed. The are through which this acceleration takes place may be varied by varyingthe eccentricity of the pin 13 by means of the screw 11. If the ring be drawn up concentric with the shaft the pins 17 will lie diametrically opposite one another, and the segments 3 will also be diametrically opposite one anl l l I der formed in a alternately come together at their opposite ends in the course of each revolution.

For printing purposes the segments are preferably provided with complementary teeth 20, which serve to support stereotypes longer than the arcs subtended by one of the segments and which may intermesh when short stereotypes are employed. (See Fig. 5.) Any of the,ordinary well known devices may be employed to hold the stereotypes in position. Instead of stereotypes, perforating, dividing, or other impression devices may be employed.

hat I claim as my invention is:

1. In rotary impression apparatus a rotary impression means formed independent, concentrically-journaled segments forming less than the complete periphery of a cylinder; and means for driving each segment at a given speed during the operative part of its rotation and at a different speed during the non-operative part of its rotation.

2. In rotary impression apparatus a rotary of a plurality of impression means formed'iofaplurality-of H independent, concentrically-journaled seg-,

ments forming less than the complete periphery of a cylinder; means for driving each segment at a given speed durin the operative part of its rotation and at a itferent speed during the non-o rative part/0f its rotation; and means length of the arc in which each segment is non-operative.

or varying the,

3. In rotary impression apparatus a cylinplurality of inde endent concentrically journaled segments orming less than the complete eriphery of the cylinder; means for in ependently rotating each segment and for driving each of'said segments at an accelerated speed during part of each rotation; ing the length of the celeration takes place.

Toronto, Ont, 26th Se tember, 1907.

LOUIS HUFFMAN. Signed in the presence of- J. Enw. AYBEE, F. W. M. KENDRICK.

are in which the acand means for vary-f 

